摘要
利用TOFD(超声衍射时差法)检测技术对一台在役的5 000 m3球形储罐(简称球罐)进行了检测,发现该检测技术能有效地检出球罐中的气孔、夹渣、未熔合、裂纹等埋藏缺陷。根据检测结果,确定了球罐的安全状况等级,探讨了缺陷形成的原因,并建议在球罐的定期检验中重点检测球罐的环焊缝。
TOFD（Time of Flight Diffraction）detection technology was carried on an in-service 5 000 m～3 spherical tank,showing that it could effectively detect the internal defects such as pore,slag,incomplete fusion,crack.According to the testing results,the safety status level on spherical tank was determined and the causes of the defect were discussed.It is recommended that the ring welds of spherical tank need to be periodically inspected.
作者
张勇芳
戴翔
罗更生
ZHANG Yongfang1,DAI Xiang1,LUO Gengsheng1,2(1. Hunan Provincial Special Equipment Inspection and Testing Institute, Changsha 410117, China; 2.School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, Chin)
出处
《无损检测》
2018年第3期41-45,共5页
Nondestructive Testing
基金
湖南省质监局科研计划资助项目(2016KYJH19)
关键词
TOFD
缺陷检测
球形储罐
定期检验
TOFD
defect detection
spherical tank
periodical inspection
